Nginx(音“engine x”)是一款开源的web和反向代理服务器，查看官网。�具有高性能、高并发、低内存特点，另外还有一些特色的Web服务器功能，如负载均衡、缓存、访问和带宽控制。
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MAC环境下有一个好用的软件安装方法，使用homebrew来安装各个软件既快捷又不用考虑依赖包的问题。
1、先安装homebrew。官网。终端执行以下命令：
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
出现以下log表示安装完成了。
Installation successful!
2、安装Nginx，终端下执行：
brew install nginx
安装过程中会自己安装依赖：
$ brew install nginx
Warning: You have Xcode 8 installed without the CLT;
this causes certain builds to fail on OS X El Capitan (10.11).
Please install the CLT via:
sudo xcode-select --install
==> Installing dependencies for nginx: openssl, pcre
==> Installing nginx dependency: openssl
安装完成后会有以下log：
The default port has been set in /usr/local/etc/nginx/nginx.conf to 8080 so that
nginx can run without sudo.
nginx will load all files in /usr/local/etc/nginx/servers/.
To have launchd start nginx now and restart at login:
brew services start nginx
Or, if you don't want/need a background service you can just run:
nginx
==> Summary
🍺 /usr/local/Cellar/nginx/1.10.1: 7 files, 972.3K
3.鉴于安装过程中出现的Warning，为避免将来掉坑，运行
sudo xcode-select --install
终端会出现提示
xcode-select: note: install requested for command line developer tools
并会询问安装工具
xcode-select
点击安装，等待软件安装完成即可。
4.启动nginx服务
brew services start nginx
$ brew services start nginx
==> Tapping homebrew/services
Cloning into '/usr/local/Homebrew/Library/Taps/homebrew/homebrew-services'...
remote: Counting objects: 10, done.
remote: Compressing objects: 100% (7/7), done.
remote: Total 10 (delta 0), reused 6 (delta 0), pack-reused 0
Unpacking objects: 100% (10/10), done.
Checking connectivity... done.
Tapped 0 formulae (36 files, 46.1K)
==> Successfully started `nginx` (label: homebrew.mxcl.nginx)
成功后，使用浏览器打开http://localhost:8080 。
如果打开页面如下，证明安装完成，可以使用了。
screenshot200.png
5.nginx文件目录
5.1 nginx安装文件目录
/usr/local/Cellar/nginx
5.2 nginx配置文件目录
/usr/local/etc/nginx
5.3 config文件目录
/usr/local/etc/nginx/nginx.conf
5.4 系统hosts位置
/private/etc/hosts
6.nginx常用命令
nginx #启动nginx
nginx -s quit #快速停止nginx
nginx -V #查看版本，以及配置文件地址
nginx -v #查看版本
nginx -s reload|reopen|stop|quit #重新加载配置|重启|快速停止|安全关闭nginx
nginx -h #帮助
$ nginx -h #帮助
nginx version: nginx/1.10.1
Usage: nginx [-?hvVtTq] [-s signal] [-c filename] [-p prefix] [-g directives]
Options:
-?,-h : this help
-v : show version and exit
-V : show version and configure options then exit
-t : test configuration and exit
-T : test configuration, dump it and exit
-q : suppress non-error messages during configuration testing
-s signal : send signal to a master process: stop, quit, reopen, reload
-p prefix : set prefix path (default: /usr/local/Cellar/nginx/1.10.1/)
-c filename : set configuration file (default: /usr/local/etc/nginx/nginx.conf)
-g directives : set global directives out of configuration file
7.卸载nginx
brew uninstall nginx
